diff --git a/packages/express-backend/web.config b/packages/express-backend/web.config
index baea9ef..bcee953 100644
--- a/packages/express-backend/web.config
+++ b/packages/express-backend/web.config
@@ -22,6 +22,13 @@
         </rule>
       </rules>
     </rewrite>
+    <httpProtocol>
+      <customHeaders>
+        <add name="Access-Control-Allow-Origin" value="*" />
+        <add name="Access-Control-Allow-Methods" value="GET, PUT, POST, PATCH, DELETE, HEAD" />
+        <add name="Access-Control-Allow-Headers" value="Origin, X-Requested-With, Content-Type, Accept" />
+      </customHeaders>
+    </httpProtocol>
     <!-- Add httpErrors errorMode="Detailed" before </system.webServer> closing tag -->
     <httpErrors errorMode="Detailed"></httpErrors>
   </system.webServer>